/*
 * Copyright 2020 Mikhail Lopatkin
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package name.mlopatkin.andlogview.device;

/**
 * Utilities to work with on-device paths.
 */
public final class DevicePaths {
    // TODO(mlopatkin): Can we have java.nio.file.FileSystem for this? Is it worth it?
    private DevicePaths() {}

    public static final char SEP = '/';

    public static String join(String basePath, String other) {
        if (isAbsPath(other)) {
            return other;
        }
        if (!basePath.isEmpty() && basePath.charAt(basePath.length() - 1) == SEP) {
            return basePath + other;
        }
        return basePath + SEP + other;
    }

    public static boolean isAbsPath(String path) {
        return !path.isEmpty() && path.charAt(0) == SEP;
    }
}
